• Who is the audience for these plots and discussions?
  • What are we presenting externally vs using internally?
    
  • What level of depth is required?
• How defensible or credible are some of the choices we are making?
  
• What is the story behind the data, inclusive of all choices?

• %95.7 of 1970s-Installed incidents were on the Outer Continental Shelf
  • Compared to %79.4 in all other installation decades
    
• A vast majority of OCS Mileage in use as of 2021 appears to be built post-1960
  • In-state pipelines offer a more balanced proportion, as we’ll see on the next plot

• In the original, I was separately averaging incidents per decade-year mileage
  • The revision is summing incidents and summing mileage to get a rate
    
  • Issues arise when you divide by 0
    
• 0 Appears in 2010 and 2011 (not in the original plot’s time frame)
  • In these years, Pre-40s and Unknown Mileage was ALL Unknown
    
  • Despite this, a handful of incidents in these years had pre-40s install year dates
    
  • The old method to get averages would result in infinite values and an infinite average

## 
##                                 OFFSHORE PIPELINE, INCLUDING RISER AND RISER BEND 
##                                                                                28 
## OFFSHORE PLATFORM/DEEPWATER PORT, INCLUDING PLATFORM-MOUNTED EQUIPMENT AND PIPING 
##                                                                                11 
##         ONSHORE BREAKOUT TANK OR STORAGE VESSEL, INCLUDING ATTACHED APPURTENANCES 
##                                                                               503 
##                  ONSHORE EQUIPMENT AND PIPING ASSOCIATED WITH BELOWGROUND STORAGE 
##                                                                                25 
##                                           ONSHORE PIPELINE, INCLUDING VALVE SITES 
##                                                                              1459 
##                                   ONSHORE PUMP/METER STATION EQUIPMENT AND PIPING 
##                                                                              1581 
##                                   ONSHORE TERMINAL/TANK FARM EQUIPMENT AND PIPING 
##                                                                              1161